:root {
  --ok: #2f9d72;
  --warn: #d49a2b;
  --down: #d35f4d;
  --unknown: #91a0a6;
}

[hidden] {
  display: none !important;
}

body {
  min-width: 320px;
}

.state.stopped i {
  background: var(--down);
}

.state.unhealthy i {
  background: var(--warn);
}

.state.unknown i,
.refresh-state[data-state="unknown"] .pulse,
.sidebar-status:not([data-state="ok"]) > i {
  background: var(--unknown);
  box-shadow: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

button:disabled { cursor: not-allowed; opacity: .5; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }
.access-note { margin: 16px 0; padding: 11px; border-radius: 7px; background: var(--teal-soft); color: var(--teal-dark); font-size: 11px; }
.form-error, .inline-error { color: #a44331; font-size: 12px; line-height: 1.6; }
.form-error:empty { display: none; }
.inline-error { padding: 10px; background: #fff4f1; border-radius: 7px; }
.progress-editor { border: 1px solid transparent; background: transparent; padding: 7px; border-radius: 7px; }
.progress-editor:hover { border-color: var(--teal); background: var(--teal-soft); }
.teacher-progress { display: flex; gap: 14px; align-items: center; margin: 24px 18px 0; font-size: 12px; }
.section-title { font-size: 13px; margin-top: 24px; }
.group-management-summary .time-value { font-size: 14px; }
.audit-table { min-width: 680px; }
.audit-more { margin-top: 18px; }
.toast { max-width: calc(100% - 32px); line-height: 1.6; }

.refresh-state[data-state="stale"] .pulse {
  background: var(--warn);
  box-shadow: 0 0 0 5px #d49a2b22;
}

.refresh-state[data-state="error"] .pulse {
  background: var(--down);
  box-shadow: 0 0 0 5px #d35f4d22;
}

.restricted-progress {
  color: #97a5aa;
  font-size: 9px;
}

.all-groups-panel {
  overflow: hidden;
  padding: 20px 0 14px;
}

.all-groups-panel .panel-heading {
  align-items: flex-start;
  gap: 24px;
  padding: 0 20px;
}

.status-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
  color: var(--muted);
  font-size: 11px;
}

.status-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.status-legend i,
.lamp-item i {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--unknown);
  box-shadow: 0 0 0 3px #91a0a626;
}

.status-legend i.healthy,
.lamp-item.healthy i {
  background: var(--ok);
  box-shadow: 0 0 0 3px #2f9d7226;
}

.status-legend i.stopped,
.lamp-item.stopped i {
  background: var(--down);
  box-shadow: 0 0 0 3px #d35f4d26;
}

.status-legend i.unhealthy,
.lamp-item.unhealthy i {
  background: var(--warn);
  box-shadow: 0 0 0 3px #d49a2b26;
}

.group-status-table-wrap {
  width: 100%;
  overflow-x: auto;
  border-top: 1px solid var(--line);
}

.group-status-table {
  width: 100%;
  min-width: 1120px;
  border-collapse: collapse;
}

.group-status-table th {
  padding: 12px 10px;
  background: #f7f9fa;
  color: #657984;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .04em;
  text-align: left;
  white-space: nowrap;
}

.group-status-table td {
  padding: 10px;
  border-top: 1px solid #e7edef;
  vertical-align: middle;
  font-size: 11px;
}

.group-status-table tbody tr:hover {
  background: #f8fbfb;
}

.group-id-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 175px;
}

.group-id-cell > span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--teal-soft);
  color: var(--teal-dark);
  font-weight: 800;
}

.group-id-cell strong,
.group-id-cell small {
  display: block;
  white-space: nowrap;
}

.group-id-cell small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 9px;
}

.service-lamps {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  min-width: 190px;
}

.lamp-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 7px;
  border: 1px solid #e1e9eb;
  border-radius: 999px;
  background: #fff;
  color: #526a74;
  font-size: 9px;
  white-space: nowrap;
}

.cell-note {
  display: block;
  margin-top: 2px;
  color: #8a9ba2;
  font-size: 8px;
  white-space: nowrap;
}

.row-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 115px;
}

.row-progress > div {
  width: 76px;
  height: 7px;
  overflow: hidden;
  border-radius: 99px;
  background: #e7edef;
}

.row-progress i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), #54b997);
}

.row-progress strong {
  color: #536b75;
  font-size: 10px;
}

.observed {
  color: #6d8189;
  white-space: nowrap;
}

.management-cell {
  min-width: 112px;
  text-align: right;
}

.group-login,
.group-manage {
  min-width: 100px;
  padding: 8px 10px;
  border-radius: 7px;
  font-size: 10px;
  font-weight: 700;
}

.group-login {
  border: 1px solid #b9c9ce;
  background: #fff;
  color: #43616c;
}

.group-login:hover:not(:disabled) {
  border-color: var(--teal);
  color: var(--teal);
}

.group-login:disabled {
  cursor: not-allowed;
  opacity: .48;
}

.group-manage {
  border: 1px solid var(--teal);
  background: var(--teal);
  color: #fff;
}

.group-manage:hover {
  background: var(--teal-dark);
}

.public-note {
  margin: 12px 18px 0;
  color: #7b8d94;
  font-size: 9px;
  line-height: 1.6;
}

.group-management-summary {
  display: grid;
  grid-template-columns: repeat(5, minmax(110px, 1fr));
  gap: 10px;
  padding: 0 18px 18px;
}

.group-management-summary.group-detail {
  grid-template-columns: repeat(4, minmax(110px, 1fr));
}

.group-management-summary > div {
  min-height: 72px;
  padding: 14px;
  border: 1px solid #e1e8ea;
  border-radius: 10px;
  background: #fbfcfc;
}

.group-management-summary span {
  display: block;
  margin-bottom: 7px;
  color: #758991;
  font-size: 9px;
}

.group-management-summary strong {
  color: var(--navy);
  font-size: 18px;
}

.no-data {
  padding: 38px !important;
  color: #8999a0;
  text-align: center;
}

@media (max-width: 900px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    position: relative;
    width: 100%;
    height: auto;
  }

  .brand-block {
    height: 74px;
    padding: 12px 18px;
  }

  .sidebar nav {
    display: flex;
    overflow-x: auto;
    padding: 8px;
  }

  .sidebar nav .menu-label,
  .sidebar-status {
    display: none;
  }

  .menu-item {
    flex: 0 0 auto;
    width: auto;
    min-width: max-content;
    margin: 0 3px;
    padding: 10px 12px;
  }

  .main-shell {
    min-width: 0;
  }

  .topbar {
    padding: 0 14px;
  }

  main {
    padding: 18px 14px 30px;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .group-management-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .group-management-summary.group-detail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .breadcrumb {
    display: none;
  }

  .topbar {
    justify-content: flex-end;
  }

  .guest-banner {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .guest-banner button {
    margin-left: 0;
  }

  .summary-grid {
    grid-template-columns: 1fr;
  }

  .all-groups-panel .panel-heading {
    display: block;
  }

  .status-legend {
    justify-content: flex-start;
    margin-top: 12px;
  }

  .group-management-summary {
    grid-template-columns: 1fr;
  }
  .group-management-summary.group-detail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-title { align-items: flex-start; gap: 14px; flex-direction: column; }
  .panel-heading { flex-wrap: wrap; }
  .context-switcher > span, #current-account { display: none; }
  #group-trigger { min-width: 0; grid-template-columns: auto 1fr auto; }
  .group-menu { right: 0; width: min(390px, calc(100vw - 28px)); }
}